> elin% dd if=/dev/zero of=/nfssrv/dd.tst bs=1024 count=1048576 > 1048576+0 records in > 1048576+0 records out > 1073741824 bytes transferred in 21.373114 secs (50237968 bytes/sec) >
Follow-up, did the same dd on a Dell 2850 with a LSI Logic (amr), 6 scsi-disks in a raid 5:
frodo~%>dd if=/dev/zero of=dd.tst bs=1024 count=1048576 1048576+0 records in 1048576+0 records out 1073741824 bytes transferred in 8.972321 secs (119672693 bytes/sec)
Must faster. FreeBSD 5.4 RC2.
FYI, here is on an Areca SATA in Raid5, 4 disks 3Ghz P4
[nfs]# dd if=/dev/zero of=dd.tst bs=1024 count=1048576 1048576+0 records in 1048576+0 records out 1073741824 bytes transferred in 16.416051 secs (65408047 bytes/sec) [nfs]#
[nfs]# dd if=/dev/zero of=dd.tst bs=2048 count=1048576 1048576+0 records in 1048576+0 records out 2147483648 bytes transferred in 30.371264 secs (70707747 bytes/sec) [nfs]#
Same box, but to an ad0 partition (similar Segate drive) [nfs]# dd if=/dev/zero of=dd.tst bs=512 count=1048576 1048576+0 records in 1048576+0 records out 536870912 bytes transferred in 11.096809 secs (48380658 bytes/sec) [nfs]#
RELENG_5 from today.
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